Home / 26,486.68-39,669.54-12,645.40

Finding the Fourth Proportional to 26,486.68, 39,669.54 and 12,645.40

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Solution

The fourth proportional to 26,486.68, 39,669.54 and 12,645.40 is: 18,939.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,486.68 : 39,669.54 = 12,645.40 : x
  2. Step 2: Convert to fraction form
    26,486.68/39,669.54 = 12,645.40/x
  3. Step 3: Cross multiply
    26,486.68x = 39,669.54 × 12,645.40
  4. Step 4: Simplify right side
    26,486.68x = 501,637,201.12
  5. Step 5: Solve for x
    x = 501,637,201.12/26,486.68
  6. Step 6: Final answer
    x = 18,939.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.